private int _passphrase_cb(IntPtr Hook, IntPtr uid_hint, IntPtr passphrase_info,
int prev_was_bad, int fd)
{
bool prevbad;
string hint, info;
char[] passwd = null;
hint = Gpgme.PtrToStringUTF8(uid_hint);
info = Gpgme.PtrToStringUTF8(passphrase_info);
if (prev_was_bad > 0)
{
prevbad = true;
}
else
{
prevbad = false;
}
PassphraseResult result;
try
{
PassphraseInfo pinfo = new PassphraseInfo(Hook, hint, info, prevbad);
result = passphraseFunc(this, pinfo, ref passwd);
}
catch (Exception ex)
{
LastCallbackException = ex;
passwd = "".ToCharArray();
result = PassphraseResult.Canceled;
}
if (fd > 0)
{
byte[] utf8passwd = Gpgme.ConvertCharArrayToUTF8(passwd, 0);
Stream fdstream = Gpgme.ConvertToStream(fd, FileAccess.Write);
fdstream.Write(utf8passwd, 0, utf8passwd.Length);
fdstream.Flush();
fdstream.WriteByte((byte)'\n');
fdstream.Flush();
// try to wipe the passwords
int i;
for (i = 0; i < utf8passwd.Length; i++)
{
utf8passwd[i] = 0;
}
}
return((int)result);
}
// internal callback function
private int _edit_cb(
IntPtr opaque,
int status,
IntPtr args,
int fd)
{
gpgme_status_code_t statuscode = (gpgme_status_code_t)status;
string cmdargs = Gpgme.PtrToStringUTF8(args);
Stream fdstream;
if (fd > 0)
{
fdstream = Gpgme.ConvertToStream(fd, FileAccess.Write);
}
else
{
fdstream = null;
}
int result = 0;
try
{
// call user callback function.
result = KeyEditCallback(
opaque,
(KeyEditStatusCode)statuscode,
cmdargs,
fdstream);
}
catch (Exception ex)
{
LastCallbackException = ex;
}
return(result);
}
